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Finding the Fourth Proportional to 10,940.40, 16,410.60 and 10,843.20

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Solution

The fourth proportional to 10,940.40, 16,410.60 and 10,843.20 is: 16,264.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,940.40 : 16,410.60 = 10,843.20 : x
  2. Step 2: Convert to fraction form
    10,940.40/16,410.60 = 10,843.20/x
  3. Step 3: Cross multiply
    10,940.40x = 16,410.60 × 10,843.20
  4. Step 4: Simplify right side
    10,940.40x = 177,943,417.92
  5. Step 5: Solve for x
    x = 177,943,417.92/10,940.40
  6. Step 6: Final answer
    x = 16,264.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.